Homework Answers
a):- Solid to Liquid - the attractive force in solids is much higher than liquid on changing from solid to liquid attractive force decreases .
Liquid to Gas - the attractive force in liquid is weak, on changing from liquid to gas the attractive force become weakest or negligible in case of gases .
b):- strongest attractive force - Eicosane has strong attractive force because it is solid in nature which shows the strong intermolecular forces of attraction.
Weakest attractive force - methane has weakest attractive force because it is a gas .
C) :- Methane has no intermolecular force of attraction at all because it is a gas in nature.
Octane has weak intermolecular forces of attraction because it is a liquid in nature .
Eicosane has strong intermolecular forces of attraction because it is a solid in nature.
* the size of a molecule influences the strength of intermolecular attractions if a molecule has a small size then in has lower force of attraction between the molecules and if a molecule has a very big size then it shows very strong force of attraction between the molecules which shown in solids .
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